VS
Name
—
Ba₂Ti₂Na₂Fe²⁺Mg(Si₂O₇)₂O₂F₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
3–4
Mohs hardness
—
3.776
Specific gravity
—
White
Streak
—
—
Luster
—
Perfect on {001}
Cleavage
—
C2/m
Space group
—
Seidozerite-Lamprophyllite
Structural group
—
Lly · Approved
IMA
—
2011
Named in
—
Brown
Typical colors
—
Ba · Ti · Na · Fe · Mg · Si · O · F
Elements
—